Messages in this thread |  | | Subject | Re: [PATCH v22 00/24] Intel SGX foundations | From | Dave Hansen <> | Date | Sat, 14 Sep 2019 08:32:38 -0700 |
| |
On 9/14/19 6:41 AM, Jarkko Sakkinen wrote: > > The proposed LSM hooks give the granularity to make yes/no decision > based on the > > * The origin of the source of the source for the enclave. > * The requested permissions for the added or mapped peage. > > The hooks to do these checks are provided for mmap() and EADD > operations. > > With just file permissions you can still limit mmap() by having a > privileged process to build the enclaves and pass the file descriptor > to the enclave user who can mmap() the enclave within the constraints > set by the enclave pages (their permissions refine the roof that you > can mmap() any memory range within an enclave).
The LSM hooks are presumably fixing a problem that these patches introduce. What's that problem?
|  |